{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Chemical"], "input": "Stable oscillation zoo - phytobenthos systems were produced at diatom exposures of 0 , 100 , and 150 micro g / L atrazine ."}
{"Chemical": ["atrazine"]}